Well, as has been mentioned, "Talk to X" is a great choice, but feel free to make it more esoteric. Talk to spiders? Sure. Rocks? Why not. But let's keep going - what about talking to handmade wooden furniture? The more ornate, the more eloquent? What about talking to pastries, or cheesecake in particular? What about talking to the Platonic Ideal of Fire, through the medium of any source of fire?

Here's a fun one - mimicry. Something generally within mundane ability, but taken to a whole new level. You can not only accurately reproduce voices or sounds, you can reproduce multiple sounds at once. Open your mouth and a symphony emerges. Recreate the exact sound (and decibel level) of a speeding locomotive.

And here's one I particularly enjoy - acceleration and deceleration. It's a very specific form of telekinesis that only works on objects in motion. (That's relative motion, so no arguments that we're all hurtling through space at thousands of miles an hour.) So it can't cause an object to start moving if it isn't already; by the same token, it can't fully stop it, even though it can be slowed to a crawl.

Another option, which tends to trip a bit over the popularity of Avatar and Korra, is augmentation. Not the ability to manifest something on its own, but the ability to augment one's own physical abilities through magical manifestation. Jump higher, punch harder, with a little explosion of some kind of energy as you do. It needn't be fire, or air, it could simply be a shockwave, or crackling magical sparkles or something. A little added firework and a little added punch.

One more of my favorites, and an incredibly subtle one, is True Faith. The character has an unshakeable faith in something, doesn't matter what, which manifests in an almost purely reactive manner. For one thing, supernatural beings find this character to be anathema - the more powerful the being, the more toxic the faith is. For another, they can shake off attempts to manipulate or control their minds better than other characters can. Because it's almost purely reactive, characters can go for an entire story barely aware of the fact that it's supernatural at all; the character can simply come across as strong-willed. (Unless you do something cool like make them radiate golden light.)